Articles tagged with Electric Vehicles
Researchers at Simon Fraser University are working to improve the efficiency of light electric vehicles by developing next-generation 'passive' cooling solutions for battery chargers. Graphite is being used to enhance thermal performance, eliminate parasitic cooling power, and decrease electromagnetic interference.
Virginia Tech has received a $3 million grant from the US Department of Energy to develop comprehensive solutions for electric vehicle charging infrastructure cybersecurity. The team will focus on mitigating threats and ensuring the reliability of EV transportation, including fast charging systems and user privacy.
Researchers at Shinshu University developed a self-assembled monolayer coating that promotes efficient transportation within electrodes, suppressing side reactions in high-voltage lithium-ion batteries. The coating improved power density and cyclability, allowing the battery to maintain capacity even after 100 cycles.
Researchers at North Carolina State University have developed a new electric vehicle fast charger that is 10 times smaller and wastes 60% less power than existing systems. The technology, called medium voltage fast charger (MVFC), has an efficiency of at least 97.5%, reducing operating costs and increasing revenue for consumers.
New research from Idaho National Laboratory found that cold temperatures significantly impact EV charging efficiency, leading to longer charging times. The study analyzed data from a fleet of electric vehicles in New York City, revealing a decrease in battery state of charge with lower temperatures.
Physicists develop mathematical formula to approximate magnetic field circulation around a closed path or loop, based on Biot-Savart's law. The study provides a new approach to evaluate the effects of magnetic fields on human health and prevent exposure.
A new study by University of Sussex researchers recommends targeting highly educated women and retirees for electric vehicle sales, citing their environmental awareness and characteristics that make them ideal customers. The study highlights the need for a nuanced approach to increase electric car ownership, transcending gender neutral...
Researchers at Penn State developed a self-heating battery that can rapidly charge regardless of outside temperature. The battery's unique design allows for 15-minute charging at temperatures as low as -45 degrees F, reducing range anxiety and increasing driving distances.
Penn State engineers have developed a new lithium-ion battery that can charge electric vehicle batteries up to 10 times faster than current technology, regardless of temperature. The breakthrough could be a major selling point for customers and accelerate the adoption of electric vehicles.
The US Department of Energy's Oak Ridge National Laboratory has developed a direct-current detector technology to aid emergency responders in detecting high voltages from electric vehicles and homes. The handheld device can accurately detect DC voltages, enabling safer rescue efforts.
A team led by CSU researcher Jason Quinn will evaluate the feasibility and benefits of wireless electric vehicle charging. The project aims to reduce emissions and cost associated with traditional charging methods.
Researchers found that private electric vehicles can reduce CO2 emissions by incentivizing slow charging, while electrifying buses and taxis is the most effective option for improving air quality in Beijing. The study's strategy aims to maximize the benefits of renewables by managing vehicle charging.
Researchers at Berkeley Lab analyzed the cost, energy, and environmental implications of a fleet of self-driving electric vehicles operating in Manhattan. They found that shared automated electric vehicles could get the job done at a lower cost while reducing greenhouse gas emissions and energy consumption.
Researchers developed a model to test the cost and capabilities of a fleet of shared, automated electric vehicles in New York City. The study found that about 6,500 vehicles could be sustained on 1,500 medium-power electric vehicle chargers across Manhattan, resulting in a 33,000-ton reduction in carbon dioxide emissions per year.
University of Colorado Boulder engineers are developing a proof of concept for wireless power transfer that can transmit electrical energy through electric fields at high frequencies. This technology has the potential to enable electric vehicles to charge on the go, reducing the need for frequent charging stations and increasing drivin...
Research by NREL found that up to 3% of PEVs on the road (7.5 million vehicles) does not significantly increase residential power demand. However, uncoordinated charging in clusters may overload distribution transformers, requiring infrastructure upgrades.
Researchers at the University of Waterloo have developed a new battery technology that uses lithium metal electrodes to increase energy storage capacity. The breakthrough enables electric vehicles to travel up to 600 kilometres on a single charge, three times the current range.
The European Union is requiring hybrid and pure electric vehicles to be equipped with acoustic vehicle alerting systems, which could lead to increased noise pollution. René Weinandy, head of Noise Abatement in Transport for the German Environment Agency, expressed concerns about the potential harm of these systems.
Researchers at KIT will develop process knowledge and innovative systems for series- and type-flexible production of electric motors. The 'AnStaHa' project aims to support medium-sized component suppliers and plant equipment providers in the automotive industry.
Researchers found that sitting in or standing near a charging Tesla port did not trigger a shock or affect defibrillator performance. The study's findings suggest electric vehicles are safe for individuals with cardiac defibrillators, according to the principal investigator.
Researchers at Oak Ridge National Laboratory developed a probe to detect direct-current (DC) energy, ensuring safe contact with electrical lines. The 'Hot Stick' probe can penetrate cable insulation and indicate whether a cable is fully discharged of energy.
Researchers have developed a new manganese and sodium-ion-based material that could potentially lower battery costs and improve ecofriendliness. The new material uses sodium instead of lithium, which is more abundant but has some drawbacks, such as lower energy density.
Researchers at WMG, University of Warwick, discovered that intelligent management of vehicle-to-grid technology can improve EV battery life by up to 10% while powering large buildings. Their 'smart grid' algorithm optimizes energy transfer without degrading batteries.
Wireless charging technology overcomes distance limitations to enable continuous recharging of electric vehicles. Stanford researchers developed an efficient system that allows for dynamic charging without manual tuning.
A new study by Concordia economics professor Ian Irvine reveals that electric vehicle (EV) subsidies could actually increase greenhouse gas emissions in Canada. The subsidies encourage the production of more EVs but undermine efficiency requirements for conventional vehicles, resulting in a zero or negative near-term GHG benefit.
Purdue researchers develop 'instantly rechargeable' battery technology that can be refilled like a gas tank, eliminating the need for re-charging stations. This innovation could expedite the adoption of electric and hybrid vehicles by reducing charging time and infrastructure costs.
A new study suggests that renewable energy sources are crucial for consumers to buy electric vehicles, as environmental performance trumps price and range confidence. The research found that participants prioritized the need for electricity to be produced from renewable sources for electric vehicles to be a true green alternative.
Researchers at Columbia University are developing virtual power conversion systems that use interchangeable converter modules and software to control the converter function, reducing size, cost, and increasing reliability. These systems could lead to 20-30% reductions in Volt-Ampere rating for electric vehicle drivetrains.
A Stanford University study compared battery electric vehicles with hydrogen fuel cell vehicles in a hypothetical future scenario. The results showed that investing in all-electric battery vehicles is a more economical choice for reducing carbon dioxide emissions. Battery electric vehicles offer higher energy efficiency and lower costs...
A team of Penn State materials scientists has developed a unique three-dimensional sandwich-like structure that protects the dense electric field in the polymer/ceramic composite from dielectric breakdown. The material has been shown to have high energy density, power density and excellent charge-discharge efficiency, making it highly ...
A comprehensive study found that 90% of personal vehicles on the road can be replaced by low-cost electric vehicles, reducing emissions and meeting near-term climate targets. The study analyzed driving behavior and energy requirements to demonstrate the feasibility of widespread EV adoption.
A new membrane inspired by cacti can improve fuel cell efficiency by up to four times in hot and dry conditions. This technology could transform the electric vehicle industry by reducing water management issues and increasing performance.
Researchers at Vanderbilt University and George Washington University have developed a way to convert carbon dioxide into batteries using graphite electrodes replaced with carbon material recovered from the atmosphere. This process produces carbon nanotubes that can be incorporated into lithium-ion and sodium-ion batteries, offering a ...
New research reveals that a common lithium battery catalyst harms a key soil bacterium, raising concerns about the environmental impact of these materials. The study found that the compound nickel manganese cobalt oxide (NMC) impairs the growth and respiration of Shewanella oneidensis, a hardy soil bacterium.
A new study suggests that governments can easily make subsidies too low when ignoring consumer demand uncertainty, leading to slower adoption of clean technologies. Higher subsidy levels are needed to kick-start sales and meet uncertain demand.
The new center aims to harmonize electric vehicle charging infrastructure, enabling seamless communication between cars and grids. It drafts international standards for interoperability testing and develops physical devices to connect vehicles to the grid.
The University of Missouri engineer Yangchuan Xing has received a $2.2 million DOE grant to develop manufacturing technology for lithium ion batteries used in electric vehicles. The project aims to drive down the cost of environmentally friendly automobiles, creating jobs and economic development in Missouri.
A team of Penn State researchers has created a simple mathematical formula to predict the most influential factors in lithium-ion battery aging. The formula takes into account state of charge, charging/discharging frequency, operating temperature, and current to estimate battery degradation.
Researchers at Toyohashi University of Technology have developed a new method to measure the kQ product in real-time, allowing for highly efficient wireless power-transfer systems. This system improves design speeds, facilitates quick discovery of structures and dimensions, and enables rapid optimization of transmission frequencies.
The authors identified factors that can protect against range stress in battery electric vehicles, including hands-on experience and trust in the range estimation system. The study found that even mild encounters with range stress can reduce user satisfaction and acceptance.
Analysis reveals that public charging infrastructure is not needed everywhere, with homes, workplaces, and 'hot spots' sufficient for adoption. Drivers tend to favor a few public stations when away from home, with workplace charging enabling significant electric range extension.
A Berkeley Lab study finds that electric vehicle batteries can meet daily travel needs beyond 20% capacity loss. Most drivers will still have their needs met even after substantial degradation.
Researchers at Michigan State University reveal two hidden benefits of electric vehicles: reduced heat emission and potential cooling effect on city dwellers. The study finds that replacing gas-powered vehicles with electric ones could reduce urban heat intensity by nearly 1 degree Celsius, saving energy and carbon emissions.
A new INFORMS study suggests that combining battery leasing with improved charging technology can alleviate range and resale anxieties, increasing electric vehicle adoption. The study finds that these combined models yield higher benefits than traditional ownership models, particularly in terms of emission savings and consumer surplus.
A VCU professor has received a five-year grant to extend the lifespan of lithium-ion batteries, reducing their cost and carbon footprint. He aims to develop alternative battery materials that are nontoxic and abundant, enabling the creation of more sustainable energy storage solutions.
Researchers at North Carolina State University have developed a new software that estimates the range of electric vehicles by analyzing traffic data, weather, road grade and other variables. The tool uses a predictive, big-data approach to reduce range estimation error to a couple of miles and achieve 95% accuracy in some case studies.
Engineers at TUM have developed a light-weight torque vectoring transmission for electric vehicles, which recovers braking energy more efficiently. The system, used in select top model cars with combustion engines, also enhances road handling dynamics and driving pleasure.
The Visio.M consortium presents a safety package for compact electric vehicles, providing a safe compartment and passenger protection through advanced materials and sensor systems. The integrated safety concept uses radar and camera sensors to recognize critical situations and activate protective measures.
The team's innovative approach allows for the separation between electric vehicle purchase and battery pack costs, potentially lowering prices by $10,000. Swappable modules also enable users to recharge batteries at home, expanding access to electric vehicles in cities without wall outlets.
A new INFORMS study suggests that US consumers are better off choosing electric vehicles with a range below 100 miles due to the high cost of batteries. The study found that the majority of consumers will benefit from short-range BEVs once battery costs drop below $100 per kilowatt hour.
Several companies are racing to develop new battery technologies for electric vehicles, including sodium-ion and lithium-metal options. These alternatives could potentially improve range and reduce costs, making them more viable for mass production.
Researchers developed a new material to capture problematic polysulfides in lithium-sulfur batteries, increasing their lifespan. The battery's power capacity was maintained at 89% after 100 charge-and-discharge cycles.
Berkeley Lab researchers found that hybrid cars are significantly more fuel-efficient in India and China than in the United States. In India, hybrids use up to 47-48% less fuel, while in China, they use up to 53-55%. The study's findings have important implications for countries with growing personal vehicle markets like India.
Researchers have made progress on a 'breathing' battery that could replace lithium-ion technology in electric vehicles, with the potential for nearly twice the energy storage capacity. The new battery design uses air instead of traditional materials and has shown high conductivity and the ability to discharge and recharge 100 times.
The Fraunhofer Institute's micro smart grid demonstrator is designed to manage EV fleets efficiently, avoiding short circuits during peak load times. The system aims to provide electricity exclusively from renewable sources, reducing the country's reliance on imported electricity and mitigating power outages.
A team of University of Vermont scientists has developed a novel solution to manage the growing fleet of plug-in electric cars, allowing them to charge in smaller chunks and distribute demand over time. The approach uses smart meters and computer algorithms to smooth out supply and demand, protecting grid overload.
Researchers developed robotic fish inspired by the weakly electric black ghost knifefish to study fragile coral reefs and investigate sunken ships. The technology improves underwater vehicles' agility, allowing them to navigate complex geometries in murky waters.
A new study from North Carolina State University indicates that increasing electric drive vehicle use will have little impact on reducing carbon dioxide, sulfur dioxide, and nitrogen oxide emissions. The researchers found that even if EDVs made up 42 percent of passenger vehicles, there would be limited emission reductions.
Researchers at Berkeley Lab have developed a lithium-sulfur (Li/S) battery with more than twice the specific energy of lithium-ion batteries and up to 1,500 cycles without significant capacity loss. The battery's high performance makes it promising for electric vehicles with long driving ranges.
Researchers at Oak Ridge National Laboratory have developed new technologies to improve tiny engines, analyze vast amounts of information, and boost hybrid electric vehicles. Transient doping has been successfully achieved using only electrons, while a new inverter design reduces battery losses and improves efficiency.